Intermittent, molten material, pressing machine



May 2, 1950 J. B. SISSON INTERMITTENT, MOLTEN MATERIAL, PRESSING MACHINE 3 Sheets-Sheet 1 Filed Alig. 11, 1944 INVENTOR. Jofl/v J3. 67.95am '81 X f firiamvam.

May 2, 1950 J. B. SISSON 2,505,997

INTERMITTENT, MOLTEN MATERIAL, PRESSING MACHINE Filed Aug. 11, 1944 I 3 Sheets-Sheet 2 INVENTOR. 1 Johw l3. SISSON.

.May 2, 1950 2,505,997

INTERMITTENT, MOLTEN MATERIAL, PRESSING MACHINE 3"Sheets-Shee.t 3

Filed Aug. 11, 1944 Patented ay 2, 1959 INTERMITTENT, MOLTEN MATERIAL, PRESSING MACHINE John B. Sisson, Marion, Ind.

Application August 11, 1944, Serial No. 549,016

8 Claims.

This invention relates to means for simultaneously forming a plurality of articles from plastic and more particularly molten vitreous material.

These articles may be alike, totally dissimilar, or complementary as desired or required.

It is old in the glass art to provide a rotary table with gob receiving molds on the face thereof and at one station in the table rotation supply the glass gob thereto, at a second station apply a pressing plunger to the mold, advance the plunger transverse to the plane of rotation, form the article in the mold and then retract the plunger, and at a third station remove the article from the mold.

The foregoing practice, accordingly, is inherently limited in capacity in the successive production of like articles.

The present invention, as stated, is directed to the simultaneous production of like, dissimilar and/or complementary articles upon a rotary member and at each advance of said member.

The number produced at one time is only limited by the diameter of the member and its length, Whereas in the prior art the diameter of the table is critical and of limiting character.

The chief feature of the present invention resides in the mold supporting rotatable cylinder and associating therewith a pressing plunger supporting rotatable cylinder so that for each indexing step of the cylinders a plurality of glass or like articles will be formed, and for successive indexing thereof successive articles will be formed.

Other objects and features of the invention will be set forth more fully hereinafter.

The full nature of the invention will be understood from the accompanying drawing and the following description and claims:

In the drawing Fig. l is a top plan view of the power applying end of the device embodying the invention and herein three annular series of molds and plungers are illustrated.

Fig. 2 is a partial elevation of the invention with the parts broken away for the purpose of clarity or the like.

Fig. 3 is a sectional view taken on line 3--3 of Fig. 1 and in the direction of the arrows, certain of the individual plates, molds and plungers, however, only being shown in section, others being shown in elevation.

In Figs. 1, 2 and 3 the parts are illustrated in the pressing position, dotted lines in Fig. 2, however, indicating the plunger in retracted or nonpressing position.

In Fig. 2 of the drawings l'n indicates a feeder for molten glass, associated with which is a shears l I operable in timed relation to form a gob l2 which herein, upon severance, drops into the chute i3 for discharge to a glass mold l4 therebeneath. This mold is carried by a cylinder 15 adjacent which is positioned a catcher or transfer chute l5 that discharges to an off-bearing belt 2 3 below said cylinder. This belt is of cylinder width and may have any peripheral speed sufficient for article removal.

Reference will now be had to Fig. 1. Herein it] indicates an end frame of the machine and same includes the boss or bearing 20 for the shaft IS supporting the cylinder [5. It also includes socket 21a which mounts the frame end. connector or stanchion 2!. Although not illustrated herein, same may detachably and ad-' justably support the several chutes l3 by suitable means; note its proximity in Fig. 2.

The end frame it, see Fig. 1, includes an out wardly projecting base flange 22 upon which is suitably mounted a motor 23 driving reduction unit 2 5 also mounted upon the flange. Unit 2 3 includes shaft 25 to which is pinned as at 26 the collar of sprocket 21 having an eccentric pin 28 projecting from its face toward the end frame I8.

The Geneva movement wheel 29 has its hub pinned as at 3!! to the frame projecting end of shaft l9. By this means the continuously rotating motor 23 is adapted to intermittently advance or index the shaft 19 one step in the clockwise direction of sprocket 27.

Mounted in frame I8 is a shaft which projects oppositely therefrom and on its outer end mounts sprocket 32. A chain 33 meshing with sprockets 32 and 21 thus rotates shaft 35 once for each revolution of shaft 25. Shaft 35 has adjustably secured to its inner end the pressing cam 36. This cam has a high portion 3! and the low portion 34, the purpose of which will appear more fully hereinafter.

Herein adjacent the molding cylinder l5 and parallel thereto, but slightly offset therefrom, is a pressing plunger supporting cylinder 31 having herein a like number of faces as the cylinder l5. This cylinder 3'! is supported by a 'shaft 38 in turn rotatably supported in the upper ends of arms 39 oscillatably supported at the opposite ends on rockshaft 40 rotatably supported by the two end frames.

A sprocket 4| carried by shaft 38 between cylinder 3? and the power end arm 39 meshes with sprocket chain 42 that meshes with a sprocket idler 42a carried by shaft 43 in the bifurcated member 44 spring connected to cross member 2| by spring 45. The chain 42 also meshes with a sprocket 46 rigid with the shaft [9 as at 41, see Fig. 1.

Since sprockets 4! and 46 are alike as to teeth, it will be obvious that the cylinders have the same advance or indexing movement and in the same direction. However, note that the two approach each other, as it were, from opposite directions, that is the lower part of cylinder 31 approaches the upper .part of cylinder [5.

Herein'rigidly mounted uponthe power end of shaft 40 is a bell crank 50. The upper arm a thereof lies adjacent arm 39 and its end is apertured at 5| in which is slidablymounted bolt/52. There is another arm 5M at the opposite end of the machine. Each arm 39 carries a lateral boss 53 which rigidly mounts said bolt 52. Between each boss 53 and its adjacent arm 5ilaand concentric with said bolt 52 is a spring 54. The free end of this bolt 52 is threaded and on the'end of same is the adjustable spring retainer 55 comprising a washer, nut and lock nut. Between same and the-arm portion tide and concentric with thebolt 5 2 is a spring 56. This is a pressure regulating and cushioning structure.

Extending inwardly from the power end frame ['8 is the'bossdl which herein overlies the cam'36. Interposed therebetween is the other end 5% of the bell cranked-and carried thereby is a cam follower roll 58. Opposite therefrom is spring locator 59. A spring 6%, associated therewith, normally constrains the roller 58 and bell crank 50 toward thecam 35. The other end of the spring'til is associated with a retainer 6! adjustably mounted in boss 5'1 and retained in adjusted position by'l'ock nuts 62. Retainer '6! may be threaded into said boss 51 if desired.

When the-cam36 is rotated, it permits the bell crank 59 to move clockwise due to power spring Gil, which results in the cylinder 3? being moved upwardly and'to the right, see dotted line. While so positioned the'two cylinders are advanced one step. Following-this cam advance the high point 3'! rocks the bell crank 59 counter clockwise so that the cylinder 37 is then moved to the left and downwardly to cooperate with the cylinder I5 as'hereinafter set forth. Springs 52 and 56pmvide a safety'cushion for dieprotection and constitute a -i-esilientadjustment to prevent die jamming.

Reference will nowbe had'to Fig. 3 moreparticularly. Herein cylinder i5 is comprised of at least two end spidersor frames E53 and suitably secured thereto andabout the periphery thereof are the face platestd. Each of said face plates includes a longitudinal series of spaced sockets 5;

detachably seatinga femalemold '66 havinga movable bottom portion Bl. Said mold is retained in said socket as by means of cap member 88 and bolts 69.

Each mold herein is apertured at iii and each plate 64 coincident with the socket and aligned with aperture ill is similarly apertured as at ll. Rigid with the mold bottom member is the stem 12 that is slidable in apertures is? and ll and projects into the cylinder in.

Concentric with said stem 72 and bearing at one'end upon the inner face of the adjacent plate 64 is the coiled spring '53 having its inner end seated in a cup retainer "i l secured on the stem by nut 15 threadedthereon. Spring lilnorinally constrains the'ejector type mold bottom member 61 in proper molding position.

Herein between each adjacent pair of cylinder spiders s3 and adjacent the same are the bell cranks 1 6 rotatably mounted on the shaft i9.

These two bell cranks are suitably connected together as by the elongated cam member 11 and the elongated counter weight member 18.

The number of these structures is that of the number of spiders 63 less one. Normally the weight 18 constrains the cam toward a position such that the cam face 79 is engaged by the approaching inner ends of stems l2 and said stems are forced radially outward, :as it were, in opposition to spring 73.

In this manner members 61 are moved radially outward to eject the articles previously formed ;and then'seated in the female molds 65. Follow- :ingthis action in the clockwise indexing of cylinder I ,5, the counterweighted cam is left behind by the previously cam actuated stems and is subsequently engaged by the approaching longitudinal series of stems 12. The mass of the counterweight is such that the foregoing action occurs and it is not objectionable if such cam structure has slight oscillation at each advance of cylinder it, the ejecting cam always, however, returning to ejecting position by gravity. The ejected formed articles are received by transfer chute it? before mentioned.

Referring again to Fig. 3, it will be understood that cylinder 31 is similarly constructed, that issarne comprises a suitable number of spiders Sdrigid upon halt 38 and rotatable and oscillatahle therewith. These spiders are connected together by elongated face plates Bl, each of which'includes a longitudinal series of male die or plunger seating sockets 82. Seated in each is the male die or plunger 83 retained by cap 84 secured .by bolts 85.

This male die 83 is complementary to the female die $6 and between the two the .gob of glass :is pressed 'to'shape in the oscillatory movement of .cylinder :3? toward cylinder it, while both are not rotating. Following pressing the cylinder '3? is retracted from cylinder i5 and when sunicient clearance therebetween is attained, the Geneva movement is so timed to advance each cylinder an amount sufficient to present a similar set of dies orv rather simultaneouslypresent two longitudinal series of cornpleinentar-y dies together.

it 'will be quite apparent that since the dies are detachable, the setup can produce all like articles. When desired, the dies of one longitudinal series may differ from those of another or adjacent series. When desired, the dies of one annular series may differ one from another.

Structure herein disclosed iscapablc of rapidlyproducing an extremely large number of like articles per unit of time, half that number of sets of complementary articles and one-third that number of sets of articles requiring three different pieces of were.

Whenever desired or required, see Fig. 2, each die may be subject to nozzle action. The male dies have associated therewith a longitudinal series of nozzles 9i and the female dies may be similarly associated with a longitudinal series of nozzles Each nozzle directs fluid under pressureonto the die. intermittent character. which cools the mold and cleans 'Same'of dust, etc, which might collect thereon. The fiuid also may be one of compatible lubricant character common to the industry. This nozzle dilis associated with die "56 just before it receives the gob I2 and nozzle ill is associated with die 83 just before it presses the gob to form.

Itwill clearly appear from Fig. '2"that the gobs This, preferably, is of timed The fluid may be air are gravity supplied to molds 66 when at the twelve oclock position, the article is pressed at the one oclock position, cools at the two oclocl; position and is ejected at the three oclocl; position. For all succeeding stations the several female molds cool and may be inspected by an operator at the left of the machine in Fig. 1. The dies of cylinder 3? may be inspected by an operator at the right of said cylinder.

Obvious structural details of the machine embodying the invention disclosed herein intentionally have been omitted in the interests of brevity and clarity.

It is to be noted that the drive of the two cylinders is so timed by chain 42 that it always rotates cylinder 3'! to the same degree as cylinder i5 is rotated, notwithstanding the oscillatory movement of cylinder 31, the latter movement occurring only between successive advances of the cylinders.

The throw in oscillation of cylinder 31 and the pressing duration may be adjusted to that desired or required by the selection of the proper cam 36 and associated mechanism. As stated, cylinder 91 always is retracted sufl'icient for die clearance before cylinder advance occurs and cylinder advance always has ceased prior to cylinder 31 moving toward cylinder I5 to effect pressing. The plunger dwell naturally may be that required or desired and the same can be regulated by the cam 36, the Geneva wheel and its pin, etc.

It is especially to be noted that when pressing occurs, the two confronting dies have complete peripheral contact, thereby completely closing sidered to be within the broad scope of the invention, reference being had to the appended claims.

The invention claimed is:

1. In apparatus for molding glass and like articles said apparatus having adjacent step-bystep rotatable polygonal reels with peripherally disposed molds upon one reel and peripherally disposed complementary pressin plungers on the other, the molds being successively supplied at an upper station with glass and the like and pressed at a subsequent station, and ejection means at a lower station, the mold reel having a fixed axis of rotation, the plunger reel axis of rotation being movable toward and away from the mold reel axis, the combination therewith of constantly rotating power means, an. intermittent drive therefrom to the mold reel for intermittent progressive step-by-step rotation thereof, a cyclic cam continuously rotatable by the power means, a tiltable support for the plunger reel and cyclically cam operable, and a driving connection between the reels for synchronous rotation thereof.

2. Apparatus as defined by claim 1 wherein the driving connection effects plunger reel rotation in the same direction as mold reel rotation.

3. Apparatus as defined by claim 1 wherein the last mentioned connection comprises an endless drive and a yieldable drive tautener.

1. Apparatus as defined by claim 1 wherein the tiltable support comprises a cam follower, and means normally constraining the follower into cam engagement and the plunger reel away from the mold reel.

5. Apparatus as defined by claim 1 wherein the tiltable support comprises a cam follower and a limited yieldable connection therebetween.

6. Apparatus as defined by claim 5 wherein there is provided means normally constraining the follower into cam engagement and the plunger reel away from the mold reel.

7. Apparatus as defined by claim 1 wherein the intermittent drive comprises 2. Geneva wheel and a rotator drive member.

8. Apparatus as defined by claim '7 wherein a reducing drive means operatively connects the rotator drive member to the constantly rotating power means.

JOHN B. SISSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 430,701 Smith June 24, 1890 483,663 Warren Oct. 4, 1892 994,806 Wanko June 13, 1911 1,125,895 Bingham Jan. 19, 1915 1,125,916 Schneider Jan. 19, 1915 1,672,884 Bristol May 10, 1927 1,906,561 Flexon May 2, 1933 2,250,515 Williams July 29, 1941 

